EP2724056A1 - Dispositif frein de stationnement de véhicule automobile comprenant au moins un élément de verrouillage - Google Patents

Dispositif frein de stationnement de véhicule automobile comprenant au moins un élément de verrouillage

Info

Publication number
EP2724056A1
EP2724056A1 EP11793684.9A EP11793684A EP2724056A1 EP 2724056 A1 EP2724056 A1 EP 2724056A1 EP 11793684 A EP11793684 A EP 11793684A EP 2724056 A1 EP2724056 A1 EP 2724056A1
Authority
EP
European Patent Office
Prior art keywords
parking
piston
parking lock
brake piston
parking brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11793684.9A
Other languages
German (de)
English (en)
Other versions
EP2724056B1 (fr
Inventor
Bernd Pollack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP2724056A1 publication Critical patent/EP2724056A1/fr
Application granted granted Critical
Publication of EP2724056B1 publication Critical patent/EP2724056B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
    • F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3491—Emergency release or engagement of parking locks or brakes

Definitions

  • the invention relates to a vehicle parking lock device according to the preamble of claim 1.
  • DE 10 2005 060 583 A1 discloses a vehicle parking lock device with a locking element which is intended to positively lock a parking lock piston and with an unlocking unit which has an electromagnetic actuator which is provided for unlocking the parking lock piston.
  • the invention is in particular the object of providing a simple vehicle parking lock device. This object is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.
  • the invention relates to a Kraft scholarparksperrenvorraum with at least one locking element which is intended to lock a parking lock piston form-fitting, and with an unlocking unit having at least one electromagnetic actuator which is provided for unlocking the parking brake piston.
  • the unlocking unit has a hydraulic and / or pneumatic actuator acting parallel to the electromagnetic actuator, which is provided to unlock the parking brake piston at least in the event of a failure of the electromagnetic actuator.
  • a redundant unlocking of the parking brake piston can be achieved, as a result of which the parking lock piston is particularly advantageous even in the event of a failure and / or a defect of the electromagnetic actuator can be unlocked.
  • an interpretation of the vehicle parking lock device can be simplified, whereby the vehicle parking lock device can be particularly easily designed for a larger operating range. Thereby, a robust and simple vehicle parking lock device can be provided.
  • a “parking brake piston” is to be understood as meaning, in particular, an axially movable piston which is coupled with a parking pawl to engage and disengage a parking brake interpreted state of the parking brake to be understood.
  • the term “parallel” should in this context be understood in particular to mean that a magnetic force that can be generated by the electromagnetic actuator and a hydraulic force that is generated by the electromagnetic actuator and / or a hydraulic actuator can be understood as “unlocking the parking brake piston” pneumatic actuator and actuatable hydraulic and / or pneumatic force have the same effect and that is unlocking the parking brake piston, the unlocking can be done in each case by the electromagnetic actuator or by the hydraulic and / or pneumatic actuator.
  • “Provided” is to be understood in particular specially programmed, designed, equipped and / or arranged.
  • the locking element has a positive locking contour, which is provided to lock the parking brake piston hydraulically and / or pneumatically unüberd Wegdschreibbar.
  • a secure locking of the parking brake piston can be achieved, whereby an accidental unlocking the parking brake piston can be avoided.
  • the vehicle parking lock device has a single-acting actuating cylinder which is provided for switching the parking brake piston in a non-parking position and has a spring which is provided for switching the parking brake piston in a parking position.
  • the vehicle parking lock device can be simplified.
  • a "single-acting actuating cylinder" is to be understood, in particular, as an actuating cylinder which is merely used to form a single, hydraulic and / or pneumatic circuit of the Parking lock piston provided pressure chamber is provided.
  • a “shifting of the parking brake piston” is to be understood in particular as an axial displacement of the parking brake piston into an axial position associated with the parking position or the non-parking position
  • a “parking position” is to be understood in particular as meaning a position in which a parking brake is engaged.
  • a “non-parking position” is to be understood in particular as meaning a position in which the parking brake is designed and / or designed as a driving position.
  • a “pressure chamber” is to be understood as meaning, in particular, a hydraulically and / or pneumatically actuable chamber, which at least a solid wall and at least one movable wall.
  • the KraftGermanparksperrenvorraum has a Superabatikments and a switching valve, which connects the hydraulic actuator in a first valve position, the hydraulic and / or pneumatic actuator and the actuating cylinder in a second valve position to the Radioffendruck factories.
  • a "working medium pressure supply” is to be understood in particular as meaning a unit of hydraulic and / or pneumatic elements, such as a pump, a switching valve, a line, an orifice and / or the like, which is necessary for supplying the switching valve with a resource.
  • the locking element is provided to lock the parking brake piston in the parking position and in the non-parking position.
  • a particularly advantageous vehicle parking lock device can be provided, in which the parking lock piston can be securely locked in the parking position and in the non-parking position.
  • a parking lock piston latched in a non-parking position be replaced by the hydraulic and / or pneumatic actuator. tor and locked in a parking position parking lock piston is unlocked by the electromagnetic actuator. As a result, an advantageous unlocking the parking position and the non-parking position can be achieved.
  • the vehicle parking lock device is part of a not shown automatic transmission device with a parking brake.
  • the transmission device is designed as a motor vehicle transmission device.
  • the vehicle parking lock device is provided to lock a non-illustrated gear set of the transmission device or a not-shown shaft of the transmission device by means of a parking pawl.
  • the vehicle parking lock device has an operating medium supply 17 for providing an operating medium and thus an operating medium pressure.
  • the equipment pressure supply 17 is provided to adjust a working pressure and a control pressure. It sets a constant control pressure, which is regulated by the working pressure.
  • control pressure regulated by the working pressure should be understood to mean a control pressure which corresponds to the maximum working pressure.
  • the equipment pressure supply 17 includes two pumps, not shown.
  • One of the pumps is configured as a primary pump that is mechanically coupled to an engine of a motor vehicle having the vehicle parking lock device.
  • the other pump is designed as an additional pump, which is provided to support the primary pump or to provide the equipment with the engine off.
  • the additional pump is designed as an electric pump.
  • the pumps are each designed as an oil pump.
  • the operating unit 19 has a parking position in which the parking lock is engaged, and a non-parking position in which the parking lock is designed on. In parking position the parking lock is activated and in the non-parking position the parking lock is deactivated.
  • the actuating unit 19 is designed to be single-acting.
  • the actuating unit 19 summarizes the switching of the parking brake a single-acting actuator cylinder 15, a single-acting parking brake piston 11 and an actuator 20.
  • the actuating cylinder 15 is provided for switching and thus to move the parking brake piston 11 in the non-parking position.
  • the parking lock piston 11 is arranged axially displaceable in the actuating cylinder 15.
  • the parking lock piston 11 is fixedly connected to the actuating element 20. They are made in one piece with each other.
  • the parking brake piston 1 is coupled by means of the actuating element 20 in terms of movement with the parking pawl.
  • the actuator 20 is axially displaceable by means of the parking brake piston 11 along its main extension direction 21 in two opposite switching directions 22, 23.
  • the actuator 20 operates the parking pawl.
  • the switching direction 22 is assigned to the non-parking position, that is, an axial movement of the parking brake piston 11 and thus of the actuating element 20 in the switching direction 22 leads to laying out the parking brake.
  • the switching direction 23 is assigned to the parking position, that is, an axial movement of the parking brake piston 11 and thus of the actuating element 20 in the switching direction 23 leads to the insertion of the parking brake.
  • the actuating element 20 is designed as an actuating rod.
  • the actuating unit 19 has a pressure chamber 24.
  • the pressure chamber 24 is provided for switching the non-parking position and thus for laying out the parking brake.
  • the actuating element 20 is displaceable axially by a pressurization of the pressure chamber 24 in the switching direction 22.
  • the pressure chamber 24 is formed by the actuating cylinder 15 and arranged in the actuating cylinder 15 parking brake piston 11.
  • the actuating cylinder 15 takes to form the single pressure chamber 24, the parking brake piston 11 movable.
  • the pressure chamber 24 is formed by the actuating cylinder 15 and an actuating element 20 facing away from the pressure surface 25 of the parking brake piston 11.
  • the pressure surface 25 is formed as a movable wall of the pressure chamber 24.
  • the pressure surface 25 of the parking brake piston 11 converts one in the pressure chamber 24 prevailing operating fluid pressure in an operating force on the parking brake piston 11 and thus to the actuator 20 to.
  • the actuating unit 19 has a spring 16. It is intended for autonomous adjustment of the parking position.
  • the spring 16 is provided for unpressurized adjustment of the parking position and thus to adjust the parking position without hydraulic assistance.
  • the spring 16 is operatively disposed between the actuating cylinder 15 and the parking brake piston 11. It is arranged outside of the actuating cylinder 15.
  • a spring force of the spring 16 counteracts the force that can be generated by the operating medium pressure in the pressure chamber 24.
  • the spring force of the spring 16 acts in the switching direction 23.
  • the spring 16 is provided for adjusting the park position at unpressurized pressure chamber 24. In principle, the spring 16 can also be hydraulically assisted for setting the parking position.
  • the vehicle parking lock device has a mechanical locking unit 26. It is provided for locking the actuating unit 19 and thus the parking brake piston 11.
  • the locking unit 26 is provided for locking the parking brake piston 11 in the parking position, and thus for locking an inserted parking lock, and for locking the parking brake piston 11 in the non-parking position, and thus for locking a designed parking lock.
  • the locking unit 26 is formed hydraulically unüberdrückbar. It can not be unlocked by a force acting on the parking brake piston 11 force in the pressure chamber 24.
  • the locking unit 26 comprises two form-fitting contours 27, 28 which are introduced into the actuating element 20.
  • the actuating element 20 forms the form-fitting contours 27, 28.
  • the form-fitting contour 27 is associated with the parking position and the form-locking contour 28 of the non-parking position.
  • the form-fitting contours 27, 28 are each formed obliquely without a surface, that is, they have no friction surfaces, which are provided for frictional locking and thus the hydraulically überdgurbaren lock.
  • the locking unit 26 has a locking element 10.
  • the locking member 10 locks the parking lock piston 11 as needed in the parking position or in the non-parking position.
  • the locking element 10 engages in the form-fitting contour 27.
  • the non-parking position the locking element 10 engages in the form-locking contour 28.
  • the locking element 10 has a shape-locking contour corresponding to the form-fitting contours 27, 28.
  • the positive locking contour of the locking element 0 locks the parking brake piston 11 hydraulically insuperable.
  • the form-fitting contour of the locking element 10 is formed without angled surfaces. It has no friction surfaces, resulting in an insurmountable lock.
  • the positive locking contour of the locking element 10 is located with a vertical wall on a vertical wall of the corresponding positive locking contour
  • the locking unit 26 further has a spring 29 which presses the locking element 10 against the actuating element 20.
  • the spring 29 presses the shaping firing contour of the locking element 10 into the respective form-fitting contour 27,
  • a locking force acting on the parking lock piston 11 locked in the parking or non-parking position results from the locking element 10 and the spring force of the spring 6.
  • the vehicle parking lock device has an unlocking unit 12.
  • the unlocking unit 12 has an electromagnetic actuator 13 and a hydraulic actuator 14.
  • the electromagnetic actuator 13 and the hydraulic actuator 14 are each provided for unlocking the parking brake piston 11.
  • the parking lock piston 11 can be unlocked by the electromagnetic actuator 13 or by the hydraulic actuator 14. It is unlocked for switching the park position by the hydraulic actuator 14 and for switching the non-parking position by the electromagnetic actuator 13.
  • the parking lock piston 11 locked in the non-parking position is unlocked by the hydraulic actuator 14 and the parking lock piston 11 locked in the parking position by the electromagnetic actuator 13.
  • the electromagnetic actuator 13 provides for releasing the parking brake piston 11 a force acting on the locking element 10 magnetic force. He unlocks the parking brake piston 11 for switching the non-parking position.
  • the electromagnetic Actuator 13 unlocks the parking lock piston 11 locked in the parking position.
  • the electromagnetic actuator 13 provides a magnetic force for unlocking which acts counter to a spring force of the spring 29.
  • the electromagnetic actuator 13 triggers a positive connection between the locking element 10 and the parking brake piston 11 for unlocking. He presses or pulls out the locking element 10 from the form-fitting contour 27.
  • a control and regulating unit (not shown) of the motor vehicle parking lock device energizes the electromagnetic actuator 3, whereby the positive locking is released.
  • the electromagnetic actuator 13 is formed as a solenoid.
  • the hydraulic actuator 14 acts in parallel to the electromagnetic actuator 13.
  • the hydraulic actuator 14 provides for releasing the parking brake piston 11 a force acting on the locking element 10 hydraulic force. He unlocks the parking brake piston 11 for switching the parking position.
  • the hydraulic actuator 14 unlocks the park lock piston 11 locked in the non-parking position.
  • the hydraulic actuator 14 provides a hydraulic force for unlocking which acts against the spring force of the spring 29.
  • the hydraulic actuator 14 releases for unlocking a positive connection between the locking element 10 and the parking brake piston 1. He presses or pulls the locking element 10 from the positive locking contour 28 out.
  • the hydraulic actuator 14 has a pressure chamber.
  • the parking lock piston 11 can be unlocked by pressurizing the pressure chamber of the hydraulic actuator 14.
  • a pressure surface of the pressure chamber of the hydraulic actuator 14 converts an operating pressure prevailing in the pressure chamber into an unlocking force on the locking element 10, wherein the unlocking force acts against the spring force of the spring 29.
  • the actuator 14 can also be designed as a pneumatic actuator.
  • the electromagnetic actuator 3 can also be provided for unlocking the parking lock piston 11 locked in the non-parking position and thus act on the locking element 10 simultaneously and in parallel with the hydraulic actuator 14 for unlocking the parking lock piston 11 locked in the non-parking position.
  • the hydraulic actuator 14 is thus in particular for unlocking the parking locking piston 11 in case of failure of the electromagnetic actuator 13 and thus provided for emergency release.
  • the hydraulically insurmountable locking unit 26 is designed so that the locking of the parking position and the non-parking position can be solved only by means of the electromagnetic actuator 13 or by means of the hydraulic actuator 14.
  • the KraftGermanparksperrenvortechnisch a self-switching switching valve 18.
  • the switching valve 18 has a first valve position and a second valve position. In the first valve position, the switching valve 18 fluidly binds the hydraulic actuator 14 to the operating medium pressure supply 17 and separates the actuating cylinder 15 fluidically from the operating medium pressure supply 17 (see Fig. 1). In the first valve position, the switching valve 18 supplies the pressure chamber of the hydraulic actuator 14 with the working pressure. In the second valve position, the switching valve 18 fluidly binds the actuating cylinder 15 to the Troffenbuchstra 17 and fluidically separates the hydraulic actuator 14 from the Basicffenbuchtechnik supplies 17.
  • the switching valve 18 supplies the pressure chamber 24 of the actuating cylinder 15 with the working pressure.
  • the first valve position is assigned to the parking position and the second valve position to the non-parking position.
  • the switching valve 18 supplies the circuit of the parking position, the pressure chamber of the hydraulic actuator 14 and the circuit of the non-parking position, the pressure chamber 24 of the actuating cylinder 15 with the working pressure.
  • the switching valve 18 is fluidly connected to the hydraulic actuator 14 by means of an operating fluid pressure line 30.
  • the switching valve 18 is fluidly connected by means of a fluid pressure line 31 to the actuating cylinder 15.
  • the switching valve 18 has a switching slide 32 and a functionally connected to the slide valve 32 spring 33.
  • the spring 33 is provided to move the slide valve 32 independently in the first valve position and thus independently switch the first valve position of the switching valve 18.
  • the switching valve 8 connects the pressure chamber 24 of the actuating cylinder 15 with a pressureless resource reservoir 34. It connects in the first valve position, the fluid pressure line 31 fluidly with the unpressurized resource reservoir 34th
  • the switching valve 18 has a first control volume 35.
  • the first control volume 35 counteracts a spring force of the spring 33.
  • the force in the first control volume 35 is provided to push the slide valve 32 against the spring force of the spring 33 and thus from the first valve position.
  • the force in the first control volume 35 is formed as an operating medium pressure, which counteracts the spring force of the spring 33. It is designed as the constant control pressure, which is regulated by the working pressure.
  • the first valve position is thus formed as a basic position and the second valve position as a switching position of the switching valve 18.
  • the switching valve 18 has a second control volume 36.
  • the second control volume 36 counteracts the first control volume 35.
  • the two control volumes 35, 36 are arranged opposite to each other.
  • the second control volume 36 acts in addition to the spring force of the spring 33. It acts in a same direction as the spring force of the spring 33.
  • the force in the second control volume 36 is provided, the slide valve 32 against the first control volume 35 and thus from the second Push valve position. It is provided for the displacement of the switching slide 32 in the first valve position.
  • the force in the second control volume 36 is formed as an operating medium pressure, which acts with the spring force of the spring 33 and counteracts the force in the first control volume 35. It is designed as the constant control pressure, which is regulated by the working pressure.
  • the spring 33 is arranged in the second control volume 36.
  • the vehicle parking lock device For supplying the first control volume 35 of the switching valve 18 with the constant control pressure, the vehicle parking lock device has a pilot pressure line 37.
  • the pilot pressure line 37 connects the fluid pressure supply 17 in terms of flow with the first control volume 35.
  • the fluid pressure supply 17 is provided to adjust in the pilot pressure line 37 and thus in the first control volume 35 of the switching valve 18, the constant, regulated by the working pressure control pressure.
  • the vehicle parking lock device For supplying the second control volume 36 of the switching valve 18 with the constant control pressure, the vehicle parking lock device has a pilot pressure line 38.
  • the pilot pressure line 38 connects the operating pressure supply 17 flows. mentally with the second control volume 36.
  • the operating medium supply 17 is provided to adjust in the pilot pressure line 38 and thus in the second control volume 36 of the switching valve 18, the constant, regulated by the working pressure control pressure.
  • the vehicle parking lock device For supplying the hydraulic actuator 14 and the actuating cylinder 15 with the working pressure, the vehicle parking lock device has a working pressure line 39.
  • the operating medium supply 17 is provided to adjust the working pressure in the working pressure line 39. It is intended to adjust the working pressure in the working pressure line 39 for switching the non-parking position and in another operating state for unlocking the locked in the non-parking position parking lock piston 11.
  • the switching valve 18 connects in the first valve position the working pressure line 39 fluidly with the pressure chamber of the hydraulic actuator 14 and in the second valve position, the working pressure line 39 fluidly with the pressure chamber 24th
  • the vehicle parking lock device has an externally controllable control valve 40.
  • the control valve 40 is provided to adjust the control pressure in the second control volume 36.
  • the control valve 40 connects and disconnects the pilot pressure line 38 fluidly from the Melstoffbuchmers 17.
  • the control valve 40 connects the Basicstoffbuchmakers 17 with the pilot pressure line 38 and thus with the second control volume 36.
  • the control valve 40 is provided to the pilot pressure line 38, which is fluidly connected to the control volume 36 of the switching valve 18, in an operating state of the second valve position, the control valve 40 separates the Radioffeneldruckmakers 17 from the pilot pressure line 38 and the second control volume Vorêttiktechnisch 37 to separate flow and in another operating condition with the pilot pressure line 37 fluidly connect.
  • the control valve 40 connects the two pilot pressure lines 37, 38 fluidly with each other, whereby the spring 33 independently switches the first valve position of the switching valve 18, or separates the two pilot pressure lines 37, 38 fluidly from each other, whereby the constant control pressure in the first control volume 35 of the switching valve 18, the spring 33 is suppressed and the second valve position of the switching valve 18 switches.
  • the control valve 40 is intended to switch between the parking position and the non-parking position without a mechanical coupling between the operator and mechanics, being unlocked to switch the parking position of the locked in the non-parking position parking brake piston 1 directly hydraulically.
  • the control and regulating unit activates the control valve 40 for unlocking the park lock piston 11 locked in the non-parking position, whereby the control valve 40 controls the pilot pressure lines 37, 38 fluidically interconnected.
  • the same constant control pressure prevails in the second control volume 36, in which the spring 33 is arranged, and in the control volume 35 of the switching valve 18, whereby the spring 33 automatically shifts the slide valve 32 independently into the first valve position.
  • Characterized the pressure chamber 24 is fluidically connected to the unpressurized resource reservoir 34 and the pressure chamber of the hydraulic actuator 14 with the working pressure line 39, whereby the pressure chamber of the hydraulic actuator 14 is acted upon by the working pressure.
  • a hydraulic unlocking force acts on the locking element 10, which counteracts the spring force of the spring 29, whereby the locking element 10 moves out of the form-locking contour 28 and the parking brake piston 11 is unlocked.
  • the spring 16 displaces or presses the unlocked parking lock piston 11 independently in the parking position. If the operating medium pressure supply 17 is switched off, for example by switching off the engine of the motor vehicle, if the operating pressure supply 17 is defective or deactivating the control valve 40 to switch the second valve position, the spring 29 of the locking unit 26 automatically pushes the locking element 0 into the positive locking contour 27 whereby the parking lock piston 11 is locked in the parking position. The parking lock is engaged.
  • the control and regulating unit activates the electromagnetic actuator 13 to unlock the parking lock piston 11 locked in the parking position.
  • a magnetic unlocking force acts on the locking element 10, which counteracts the spring force of the spring 29, whereby the locking element 10 moves out of the form-locking contour 27 and the Sperrperrenkol- ben 11 is unlocked.
  • the control and regulating unit deactivates the control valve 40, whereby the control valve 40, the pilot pressure lines 37, 38 fluidly separated from each other.
  • control and regulating unit for locking the non-parking position deactivates the electromagnetic actuator 13, whereby the spring 29, the locking member 10 moves independently in the positive locking contour 28 and the parking brake piston 11 locked in the non-parking position.
  • the parking lock is designed.
  • the electromagnetic actuator 13 is energized only for unlocking the locked in the park position parking lock piston 11 of the control unit and thus activated.
  • the electromagnetic actuator 13 can also be energized to unlock the locked in the park position parking brake piston 11 and to unlock the locked in the non-parking position parking lock piston 11 of the control unit and thus activated.
  • the hydraulic actuator 4 is provided only for emergency release.
  • the hydraulic actuator 14 and the electromagnetic actuator 13 simultaneously provide the unlocking force for switching the parking position. They thus provide a redundant unlocking force.
  • a hydraulic force provided by the hydraulic actuator 14 and, at the same time, a magnetic force provided by the electromagnetic actuator 13 act on the locking element 10. If the electromagnetic actuator 13 now fails due to a defect, the parking lock piston locked in the non-parking position acts 11 unlocked solely by the hydraulic actuator 14, whereby the parking position can be adjusted even in case of failure of the electromagnetic actuator 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)
  • Transportation (AREA)
  • Control Of Transmission Device (AREA)

Abstract

L'invention concerne un dispositif frein de stationnement pourvu d'au moins un élément de verrouillage (10) prévu pour verrouiller un piston de frein de stationnement (11) par complémentarité de formes, et d'une unité de déverrouillage (12) comprenant au moins un actionneur électromagnétique (13) prévu pour déverrouiller le piston de frein de stationnement (11). Selon l'invention, l'unité de déverrouillage (12) comporte un actionneur hydraulique et/ou pneumatique (14) agissant parallèlement à l'actionneur électromagnétique (13) et prévu pour déverrouiller le piston de frein de stationnement (11) au moins en cas de défaillance de l'actionneur électromagnétique (13).
EP11793684.9A 2011-06-21 2011-12-10 Dispositif frein de stationnement de véhicule automobile et méthode pour le dispositif Active EP2724056B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011105068A DE102011105068A1 (de) 2011-06-21 2011-06-21 Kraftfahrzeugparksperrenvorrichtung mit zumindest einem Verriegelungselement
PCT/EP2011/006252 WO2012175102A1 (fr) 2011-06-21 2011-12-10 Dispositif frein de stationnement de véhicule automobile comprenant au moins un élément de verrouillage

Publications (2)

Publication Number Publication Date
EP2724056A1 true EP2724056A1 (fr) 2014-04-30
EP2724056B1 EP2724056B1 (fr) 2018-06-27

Family

ID=45218657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11793684.9A Active EP2724056B1 (fr) 2011-06-21 2011-12-10 Dispositif frein de stationnement de véhicule automobile et méthode pour le dispositif

Country Status (6)

Country Link
US (1) US9267599B2 (fr)
EP (1) EP2724056B1 (fr)
JP (1) JP5667728B2 (fr)
CN (1) CN103649603B (fr)
DE (1) DE102011105068A1 (fr)
WO (1) WO2012175102A1 (fr)

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EP2823203B1 (fr) * 2012-03-05 2020-08-12 SVM Schultz Verwaltungs-GmbH & Co. KG Unité de verrouillage, en particulier pour un frein de stationnement d'une boîte de vitesses automatique
DE102012016235B4 (de) 2012-08-09 2016-11-03 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Aktuatoranordnung für einen Antriebsstrang
DE102012017817A1 (de) 2012-09-05 2014-03-06 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Parksperrenanordnung
JP6015570B2 (ja) * 2013-06-17 2016-10-26 アイシン・エィ・ダブリュ株式会社 電磁ロック装置およびそれを備えたパーキングロック装置
EP3061998B1 (fr) 2013-10-23 2018-08-15 Aisin AW Co., Ltd. Dispositif de stationnement
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JP2014517237A (ja) 2014-07-17
EP2724056B1 (fr) 2018-06-27
JP5667728B2 (ja) 2015-02-12
WO2012175102A1 (fr) 2012-12-27
US20140110216A1 (en) 2014-04-24
CN103649603B (zh) 2015-11-25
DE102011105068A1 (de) 2012-07-05
US9267599B2 (en) 2016-02-23
CN103649603A (zh) 2014-03-19

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